GRAHAM COUNTY UTILITIES - PIMA
PWS ID: AZ0405002 · PIMA, Arizona 85543
Population Served
3,799
Total Violations
152
Health-Based Violations
21
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 1,632
- County
- Graham
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 98
- Treatment Tech Violations
- 21
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 35 | 2022 |
| Coliform (TCR) | MR | 25 | 2016 |
| Groundwater Rule | TT | 21 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 15 | 2020 |
| Consumer Confidence Rule | Other | 15 | 2025 |
| TTHM | MR | 14 | 2020 |
| Public Notice | Other | 7 | 2023 |
| Revised Total Coliform Rule | RPT | 4 | 2021 |
| Revised Total Coliform Rule | MON | 4 | 2021 |
| Lead and Copper Rule | MR | 3 | 2021 |
| Nitrate | MR | 1 | 2005 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1980 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.